Pocket-knife-bolster trimmer



G.SCHRADE.

POCKET KNIFE BOLSTER TRIMMER.

APPLICATION EILED- FEB. 25, I920.

Patented Mar. 8, 1921.

4 SHEETS-SHE] l.

G. SCHRADE.

POCKET KNIFE BOLSTER TRIMMER.

APPLICATION FILED FEB. 25, I920.

Patented Mar. 8, 1921.

4 SHEEIS-SHEET 2- GQSCHRADEQ .POCKET KNIFE BOLSTER TRIMMER.

1921. 4 sugars-shirt 3.

APPLICATION FILED FEB- 25, I920- G. SCHRADE.

POCKET KNIFE BOLSTER TRIMMER.

APPLICATION FILED FEB. 25. 1920.

Patented Mar. 8, 1921. SHEET 4.

4 ETs I I y/2M GEORGE SCHRADE, OF NEW YORK, N. Y.

POCKET-KNIFE-ZBOLSTER TRIMMER.

Specification of Letters Patent.

Patented Mar. 8, 1921.

Application filed February 25, 1920. Serial No. 361,195.

7 '0 all whom it may concern:

Be it known that I, GEORGE Sonnaon, a :itiZBIl of the United States, residing at New York, in the county and State of New York, have invented certain new and useful improvements in Pocket-Knife-Bolster Trlmmers, of which the following is a full, clear, and exact specification.

This invention relates to a machine for cutting off the burs at the edges of stamped or pressed metal bolsters which are to abut against the ends of the side plates of the handles of pocket knives, so that said cut edges will be adapted to form abutting joints with the corresponding ends of said side plates.

It is the aim of this invention to produce a machine for accurately and rapidly trimming or cutting said burs from the stamped or pressed bolsters, the burs on the lateral edges and outer ends of said bolsters being cut off in finishing the knives after the side plates and bolsters are riveted in place. A special object is to provide suitable cutters and means for feeding the bolsters to said cutters in such a way that the cutting off of the bur on each bolster will be assured and the same will be discharged from the machine without canting or interfering with the feeding and trimming of the next bolster. Other objects will appear as the description proceeds.

The invention will be first hereinafter described in connection with the accom panying drawings, which constitute part of this specification, and then more specifically defined in the claims at the end of the description.

In the accompanying drawings, wherein similar reference characters are used to designate corresponding parts throughout the several views Figure 1 is a plan view of a machine constructed substantially in accordance with this invention, part of the tray from which the bolsters are fed to the cutters being broken away.

Fig. 2 is an elevation of the machine taken from the front or the side which faces the operator.

Fig. 3 is an elevation taken from the right in Figs. 1 and 2, the feeding disk being omitted for clearness.

Fig. 4 is a section through the feed chute, taken on the line IV-IV of Fig. 5.

Fig. 5 is a partial plan view of said chute,

showing the bridge for said chute and means for securing it in place.

Fig. 6 is a plan view of one of the stamped or pressed bolsters as it comes from the press.

Fig. 7 is a similar view of the bolster after it has been trimmed by this machine.

Fig. 8 is an edge view of the trimmed bolster.

Fig. 9 is a section on line IXIX of Fig. 1, showing a series of bolsters in the feed chute, the burs on said bolsters being slightly exaggerated for clearness, and

Fig. 10 is a section on the line XX of Fig. 5, drawn to a larger scale with a bolster passing under the bridge.

The operating parts of the machine are supported on an inclined standard 1 having a base 2 adapted to be secured to the floor or to a table or bench (not shown). To said inclined standard a pair of tubular journal boxes 3 and 4 for the cutter shafts 5 and 6, respectively, are fastened by means of bolts 7 passed through said standard from its upper face and securing said journal boxes to the under face thereof. Each of said journal boxes has a broad flat portion 8 abutting against the under face of the standard and ribs or tongues 9 are provided on the abutting faces of said portions 8 to engage a longitudinal way 10 in the standard for locking the journal boxes against turning thereon.

The lower shaft 6 carries a cutter 11 clamped on one end between a collar 12 and nut 13, while on its other a gear '11 is secured by a collar 15. Said shaft 5 extends beyond the collar 15, however, and has a driving pulley 16 attached thereto. The upper shaft 5 carries a cutter 17 and a rubber feeding disk 170 clamped between a collar 18 and nut 19 on one end, and a gear 20 secured by lock nuts 21 on its other end. The cutter 17 overlaps and cooperates with the cutter 11 to produce a sheering cut when the shafts 5 and 6 are rotated toward each other by means of the driving pulley and the gears 14 and 20 which intermesh as shown. The gears are preferably covered by a guard 22, Figs. 1 and 2 which may be secured to the collar 15 or otherwise fastened in proper position.

Arranged between the journal boxes and preferably cast integral with the standard 1 is a feed chute 23 inclined in the opposite direction and extending across the same substantially at right angles thereto. Said chute comprises a flat plate-like casting which is also inclined transversely to a slight extent toward the cutters, so as to obtain the desired cut for trimming off the burs from the bolsters without canting or upsetting the same. A feed groove is formed on the chute between strips 24 and 25 secured to the upper surface of said chute member 23. The inner strip 24 may be fixed to the member 23 by screws 26, Fig. l, but the strip 25 is laterally adjustable on the chute member, being secured thereto by a thumb bolt 27 passed through a slot 28 in said strip 25. A rib 29 on the strip 25 engages a way or groove 30 in the chute member 23 for holding said strip against turning. The inner edge of the strip 24 extending along the feed groove 31 is slightly rounded, as at 32, and the edge of the strip 25 at the opposite side of said feed groove is beveled at 33 to accommodate the opposite edges 34 and 35, respectively, on the bolster 36, Figs. 4, 6, 7 and 8.

The bolster 36 when it comes from the stamping press has a bur 37 around its edge and a rivet lug 38 projecting from its inner face. This machine is designed to trim off that portion of the bur 37 which projects from the edge 34 of the bolster, as shown in Figs. '7 and 8, so that thetrimmed edge will. be flush with said edge 34. The bur extend ing around the other edges of the bolster may be diev trimmed or ground oil in the usual way after the same has been attached to the knife handle or frame, as will be readily understood by those skilled in the manufacture ofpoclret knives. Therivet lug 38 serves to fasten the bolster to the body of the knife.

In order to insure the feeding of the bolsters to the trimming cutters in the proper position, a bridge member 39 is secured across the feed groove 31 preferably by means of a screw bolt 40 passed through an adjusting slot 41 in a flange 42 on said bri and into the strip 25 as best shown 1n Fig. Said bridge has a notch 43 in its lower edge to permit the rivet lugs 33 on the bolsters to pass when said bolsters are placed in the feed groove in proper position but which will only allow the passage of said bolsters which are properly placed. By means of the slot 41 the bridge may be ad justed to bring the notch 43 in precisely the right position according to the arrangement of the rivet lugs on various types of bolsters.

The bolsters may be fed to the groove 31 by hand, each being placed in the'proper position, as shown in Fig. 4, above the bridge member 39, and will then slide down along said groove'by gravity to the cutters between which they will be positively'drawn by the frictional contact of the cutters therewith. In passing between the cutters, the

bur adjacent the edge 34 of each bolster will be trimmed off without canting said bolster on account of the transverse inclination of the feed chute. As a convenience in placing the bolsters in the feed groove, a tray 44 is provided, the same being rigidly attached by screw bolts 4-3 to a horizontally projecting wing 46 at the upper end of the feed chute casting 23. This tray will accommodate a considerable number of bolsters which may be picked up one at a time and placed in the feed groove by hand. ()n the floor of the tray adjacent the upper end of the feed groove there is an inclined block 47 firmly held in position by screws 48. The top surface of this block is inclined in one direction to correspond to the inclination of the feed chute, and in the other direction so as to merge into the floor of the tray. 7 Two guide strips 49 and 50 are fastened over the block to form continuations of the strips 24 and 25, and have their facing edges beveled or rounded, as at 51 and 52, to correspond to the edges 32 and 33 of said strips 24 and 25, The bolsters may thus be introduced into the feed groove by first placing them between the strips 49 and 50 and pushing them along up the inclined top surface of the block 47. he strip 49 preferably extends beyond the block and the strip 50, so that each bolster may be first engaged with the projecting end portion of said strip 49 and then pushed up onto the block from the surface of the tray and engage the strip 50 after mounting said block, this method of feeding the bolsters being most efficient and rapid.

The upper cutter, which projects above the feed chute, is preferably covered by a guard having a supporting arm 52 fastened at to the upper end of the standard 1, as shown in Fig. 3. The guard is broken away in Fig. 1 to disclose the cutter and portion of the groove below it.

The k or wheel 170 may be made of rubber or other suitable material and is de signed to steady the bolsters and positively feed them to the edges of the cutters, as best shown in 9. Said disk is also shown in Figs. 1 and 2 but is omitted in Fig. 3 in order to more clearly illustrate other parts.

Having thus described .my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. In a machine of the character described, the combination with a pair of overlapped rotary cutters, of a feed chute inclined toward the cutters longitudinally to feed bolsters to the cutters by gravity'and inclined transversely to feed said bolsters in position to be trimmed without canting.

2. In a machine of the character described, the combination with cutting means, of a feed chute having a groove in which bolsters may be guided to said cutting means, and a bridge over said groove, the lower edge of said groove being shaped to fit the upper surface of the bolsters in order to permit only those bolsters which are properly placed in the groove for trimming to pass to the cutting means.

3. In a machine of the character described, the combination with cutting means, or a feed chute having a groove in which bolsters may be guided to said cutting means, and a bridge over said groove, said bridge having a notch in its lower edge to permit the rivet lugs on properly placed bolsters to pass to the cutting means but preventing the passage of bolsters which are improperly placed in said groove.

In a machine of the character described, the combination with cutting means, of a iced chute having a. groove in which bolsters may be guided to said cutting means, a bridge over said groove, said bridge having a notch in its lower edge to permit the rivet lugs on properly placed bolsters to pass to the cutting means but preventing the passage of bolsters which are improperly placed in said groove, and means for adjusting said bridge to accommodate bolsters having diierently arranged rivet lugs.

5. In a machine of the character described, the combination with cutting means, of a horizontal tray, and an inclined chute having a feed groove for feeding bolsters from the tray to the cutting means by gravity, said chute being also inclined transversely to feed the bolsters in position to be trimmed without canting for the purpose specified.

6. In a machine or' the character described, the combination with cutting means, of horizontal tray, a chute leading from the tray to the cutting means and inclined transversely to feed bolsters in position to be trimmed without canting, and an inclined block on the tray for feeding the bolsters from the horizontal surface thereor" to the inclined surface of the chute.

7 In a machine of the character described,the combination with cutting means, of a horizontal tray. a chute leading from the tray to the cutting means and inclined transv rsely to feed bolsters in position to be trimmed without canting, a transversely inclined block mounted on the tray and having an inclined front edge for guiding the bolsters from the horizontal surface of the tray up onto said block and into the chute.

8. In a machine of the character described, the combination with cutting means, of a horizontal tray, a chute having a groove leading to the cutting means and opening above the surface of the tray, said chute be- .ing inclined transversely to feed bolsters in position to be trimmed without canting, a block on the tray adjacent the opening of the groove, said block being inclined in one direction to guide the bolsters from the horizontal surface of the tray to the inclined surface of the chute, and in another direction for guiding said bolsters onto said block, and guide strips on said block leading to said groove.

9. In a machine of the character described, the combination with cutting means, of a horizontal tray, a chute having a groove leading to the cutting means and opening above the surface of the tray, said chute being inclined to feed bolsters in position to be trimmed without canting, a block on the tray adj acentthe opening of the groove, said block being inclined to guide the bolsters onto the same and onto the chute, and guide strips on said block leading to said groove, one or" said strips extending beyond the other and onto the tray for the purpose specified.

10. In a machine of the character described, the combination with an inclined standard, of a pair of rotary cutters journaled thereon, a chute mounted on said standard and inclined in the opposite direction to feed bolsters between said cutters, and tray supported at the upper end of said chute and from which the bolsters may be fed to the latter.

In testimony whereof I have signed my name to this specification GEORGE SGHRADE. 

